| 摘要 |
PROBLEM TO BE SOLVED: To provide an actuation system having superior flying stability and low cost, securing a required amount and pressure of fluid onto an actuator 10 during lowering of external supply pressure without adding an external fluid source thereto. SOLUTION: An internal fluid source 40 is connected to supply/discharge passages 23, 28 for operating fluid to the actuator 10 for selectively supplying the operating fluid of predetermined supply pressure to an electric control valve 22. Separately from an external supply pressure introduction port 21 for introducing the operating fluid from the external fluid source, an internal supply pressure introduction port 43 is formed for introducing the operating fluid from the internal fluid source 40. The operating fluid is supplied from the external supply pressure introduction port 21 and the internal supply pressure introduction port 43 to the electric control valve 22. COPYRIGHT: (C)2005,JPO&NCIPI
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